package cn.harry.config;

import cn.harry.common.utils.Threads;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * ClassName: ThreadPoolConfig Description: 线程池配置
 *
 * @author honghh Date 2020/04/24 09:36 Copyright (C) www.honghh.top
 */
@Configuration
public class ThreadPoolConfig {

	/**
	 * 核心线程池大小
	 */
	private final int corePoolSize = 50;

	/**
	 * 最大可创建的线程数
	 */
	private final int maxPoolSize = 200;

	/**
	 * 队列最大长度
	 */
	private final int queueCapacity = 1000;

	/**
	 * 线程池维护线程所允许的空闲时间
	 */
	private final int keepAliveSeconds = 300;

	@Bean(name = "threadPoolTaskExecutor")
	public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
		executor.setMaxPoolSize(maxPoolSize);
		executor.setCorePoolSize(corePoolSize);
		executor.setQueueCapacity(queueCapacity);
		executor.setKeepAliveSeconds(keepAliveSeconds);
		// 线程池对拒绝任务(无线程可用)的处理策略
		executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
		return executor;
	}

	/**
	 * 执行周期性或定时任务
	 */
	@Bean(name = "scheduledExecutorService")
	protected ScheduledExecutorService scheduledExecutorService() {
		return new ScheduledThreadPoolExecutor(corePoolSize,
				new BasicThreadFactory.Builder().namingPattern("schedule-pool-%d")
						.daemon(true).build()) {
			@Override
			protected void afterExecute(Runnable r, Throwable t) {
				super.afterExecute(r, t);
				Threads.printException(r, t);
			}
		};
	}

}
